HelloWorld.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * The Universal Permissive License (UPL), Version 1.0
 *
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 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
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package com.oracle.truffle.tutorial;

import com.oracle.truffle.api.source.Source;
import com.oracle.truffle.api.vm.PolyglotEngine;
import com.oracle.truffle.api.vm.PolyglotEngine.Value;

// @formatter:off

/** Sample tutorial snippets. Showing how easy it is to get started using
 * Truffle in own applications. The class is deprecated to be hidden from
 * Javadoc. Only its code snippets are used from the package description.
 *
 * @since 0.23
 */
@Deprecated
public final class HelloWorld {
    private  HelloWorld() {
    }

    /**
     * @since 0.23
     */
    public static void runTests() {
        helloWorldInJavaScript();
    }

    private static void helloWorldInJavaScript() {
        // BEGIN: com.oracle.truffle.tutorial.HelloWorld#helloWorldInJavaScript
        PolyglotEngine engine = PolyglotEngine.newBuilder().build();
        Source helloSource = Source.newBuilder("'Hello World!'").
            mimeType("text/javascript").
            name("hello.js").
            build();
        Value result = engine.eval(helloSource);
        String resultString = result.as(String.class);
        assert "Hello World!".equals(resultString);
        // END: com.oracle.truffle.tutorial.HelloWorld#helloWorldInJavaScript
    }
}